To obtain new information about deep crustal structure in the Texas Gulf Coast region, tripartite arrays of long-period vertical seismographs were deployed to observe Rayleigh wave dispersion. Additional gravity measurements were also made and combined with those of a previous study to produce four detailed gravity profiles crossing the study area. Interpretation of the Rayleigh wave dispersion data and the gravity data together suggests a crustal structure consisting of a Paleozoic subduction zone and orogen buried beneath thick Mesozoic and Cenozoic sedimentary rocks.

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